Datasheet AK4377A (Asahi Kasei Microdevices)

[AK4377A] AK4377A
Low-Power Advanced 32-bit DAC with HP
1. General Description
The AK4377A is stereo advanced 32-bit high sound quality audio DAC with a built-in ground-referenced
headphone amplifier. An internal circuit integrates 32-bit digital filters for better sound quality, achieving
low distortion characteristics and wide dynamic range. The sampling frequency supports up to 384 kHz.
The AK4377A is available in a 36-pin CSP package, utilizing less board space than competitive offerings.
2. Features
1. Stereo High Sound Quality Low Power Advanced 32-bit DAC
-4 types of Digital Filter for Sound Color Selection
-2 types of Operation Mode (High Performance Mode / Low Power Mode)
2. Ground-referenced Class-G Stereo Headphone-Amp
-Output Power: 25 mW @ RL = 32 Ω
60 mW @ RL = 16 Ω
-THD+N: 107 dB @ 10 mW, RL = 32 Ω
106 dB @ 25 mW, RL = 32 Ω
-S/N: 125 dB
-Output Noise Level: 125 dBV (Analog Volume  14 dB)
-Analog Volume: +6 to 20 dB & Mute, 2 dB Step
-Ground Loop Noise Cancellation
3. HeadPhone-Amp Output comply with IEC61000-4-2 Level4 ESD Protection
4. Digital Audio interface
-Master/Slave mode
-Sampling Frequency:
Slave Mode: 8 k, 11.025 k, 12 k, 16 k, 22.05 k, 24 k, 32 k, 44.1 k, 48 k, 64 k, 88.2 k,
96 k, 128 k,176.4 k, 192 kHz, 256 k, 352.8 k, 384 kHz
Master Mode: 8 k, 11.025 k, 12 k, 16 k, 22.05 k, 24 k, 32 k, 44.1 k, 48 k, 64 k, 88.2 k,
96 k, 176.4 k, 192 kHz
-Interface Format: 32/24/16-bit I2S/MSB justified
5. Power Management
6. PLL
7. X’tal Oscillator
8. μP I/F: I2C (400 kHz)
9. Ta = 40 to 85 C
10. Power Supply: AVDD (DAC, PLL):
1.7 to 1.9 V CVDD (HP-Amp, Charge Pump):
1.7 to 1.9 V LVDD (LDO2 for Digital Core):
1.7 to 1.9 V (built-in LDO) TVDD (Audio I/F):
1.65 to 3.6 V
11. Package: 36-pin CSP (2.56 x 2.74 mm, 0.4 mm pitch) 018001092-E-00 2018/02
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